> ## Documentation Index > Fetch the complete documentation index at: https://docs.uselayers.com/llms.txt > Use this file to discover all available pages before exploring further. # Installation > Install and configure the Layers SDK in your project, including package manager setup, client initialization, and TypeScript type generation. ## Installation ```bash theme={null} npm install @commerce-blocks/sdk ``` ### Loading from a CDN The SDK ships as a pure ES module with no Node-only dependencies, so it works in the browser with no build step. Use this when you're integrating directly into a Shopify theme, a static HTML page, or any environment where you don't run `npm install`. #### unpkg (recommended) [unpkg](https://unpkg.com) serves the published npm package directly. Add the `?module` query string and unpkg rewrites the SDK's `@preact/signals-core` import into a sibling unpkg URL, so the browser resolves the entire module graph without a bundler. ```html theme={null} ``` Pin the version explicitly in production so a new release never silently changes behavior on your storefront. unpkg accepts a major (`@2`), minor (`@2.0`), or exact (`@2.0.3`) tag — for example, `https://unpkg.com/@commerce-blocks/sdk@2?module`. See the [SDK changelog](/developers/sdk/changelog) for the latest version. #### esm.sh [esm.sh](https://esm.sh) is an alternative ESM CDN that pre-bundles the SDK and its dependency into a single file. ```html theme={null} ``` #### jsDelivr [jsDelivr](https://www.jsdelivr.com) mirrors npm with its own ESM transform. Use the `+esm` suffix to get a browser-compatible bundle. ```html theme={null} ``` #### Import maps If you load multiple modules from a CDN and want to keep imports short, declare an [import map](https://developer.mozilla.org/en-US/docs/Web/HTML/Element/script/type/importmap) once and use bare specifiers everywhere else: ```html theme={null} ``` #### Reusing the client across modules `createClient` registers the client in a singleton, so any later ` ``` When pulling the SDK from a CDN, also add `` to your `` so the browser starts fetching it during HTML parse instead of waiting for the first `